Category Archives: merch

models of the 35 smallest fullerenes

I noticed that Shapeways had 13 models of the roundest of the fullerenes (one of the 1812 forms of C60), but none of the less regular forms; so I made some. Each of the white pieces has mirror symmetry; the … Continue reading

Posted in merch, sciences | 4 Comments

small irregular fullerenes

Shapeways has thirteen models of (the most symmetrical and famous form of) C60, but none of the thousands of smaller fullerenes. So I designed models of the 35 smallest, i.e. up to C36; this includes the smallest with no symmetries, … Continue reading

Posted in merch, sciences | 1 Comment

a trinket becomes a toy

A new father asked: Are you charmed or annoyed to learn that your 3d geometric object is making a great toy for [baby, 8 mo.]? I replied: I have cats, so I’m not a bit surprised! On a related note, … Continue reading

Posted in merch | Leave a comment

but wait there’s more

This one is a projection of a design on (half of) the surface of a hypersphere: a ribbon spans two orthogonal great circles, wrapping three times around one and five times around the other. Kitty teeth did break it at … Continue reading

Posted in mathematics, merch | Leave a comment

Baby’s First Klein Bottleā„¢

Not only did it not fall apart in my hands …

Posted in mathematics, merch | 1 Comment

first tangible result

The strand — for it is a Klein bottle woven of a single strand — is thinner than I expected, and has broken in at least two places. Ah well, live and learn; I’ve already redesigned it to be more … Continue reading

Posted in mathematics, merch | Leave a comment

don’t look now, but I’m a sculptor

I submitted a design to Shapeways today! I’ll tell you more if it doesn’t fall apart when I get it in my hands.

Posted in merch | 3 Comments